
- After engaging the reverse gear.
er.
Engine automatically restarts
The stop phase is interrupted in the following
situations, for example . The engine restarts
without any act ion by the driver .
- The interior temperature varies from the
temperature selected in the A/C system.
- The windshield is beeing defrosted
Q page 81.
-The brake pedal is pressed several times in a
row.
- The battery charge level becomes too low.
- High power consumption .
@ Tips
If you shift into the 0/5 or N positions af
ter shifting into reverse, the vehicle must
be driven faster than 6 mph (10 km/h) in
order for the engine to switch off again.
Switching the Start-Stop-System on/off
manually
Applies to vehicles: with Sta rt-Stop-System
If you do not wish to use the system, you can
switch it off manually .
Fig. 104 Center console: Start -Stop -System button
.,. To switch the Start-Stop -System on/off
manually, press the
1 (1;)~ 1 button . The LED in
On the road 93
the button turns on when the system is
switched off .
In vehicles without the MMI*, the
IO\> .. j button
is found underneath the selector lever .
(j} Tips
If you switch the system off during a stop
phase, the engine will start again auto
matically.
Messages in the instrument cluster
display
App lies to vehicles: wit h Start-Stop-Syste m
Start-stop system: deactivated . Please
restart engine manually
This message appears when specific condi
tions are not met during a stop phase and the
Start-Stop-System will
not be able to restart
the engine. The engine must be started with
the key or with the
I STAR T ENGINE STOP t*
button.
Start-stop system: system fault. Function
unavailable
There is a malfunction in the Start-Stop-Sys
tem. Drive the vehicle to an authorized repair
facility for servicing as soon as possible to cor
rect the malfunction.
Transmission: Car may roll! Shift to park!
This message appears if the selector lever is
not in the P position when the driver's door is
opened. You will a lso hear a warning tone.
Shift the selector lever to the P position . Oth
erw ise, the vehicle could roll.
Speed warning system
Overview
The speed warning system helps you to keep
your driving speed below a set speed limit.
The speed warning system warns if the driver
exceeds a previously stored maximum speed.
A warning tone will sound as soon as the vehi cle speed exceeds the set speed by about
3 mph (3 km/h) . At the same time, a warning
IJJ,,

(30 km/h to 240 km/h). Settings can each be
adjusted in intervals of
5 mph (10 km/h).
Cruise control
Switching on
The cruise control system makes it possible to
drive at a constant speed starting at 20 mph
(30 km/h) .
0
f
®t
0
Fig. 106 Contro l lever with push -button
Fig. 107 Di sp lay: Selected speed
.. Pull the lever to posit ion (!) ~ fig. 106 to
switch the system on .
.. Drive at the speed to be controlled .
.. Press button @to set that speed.
The stored speed and the ind icator light
Bll!lm (US model)/ il (Canad ian model) ap
pear in the instrument cluster display
<=>fig. 107. The display may vary, depending
on the type of display in your vehicle.
The speed is kept constant by modifying en
gine power or through an active brake inter
vention.
A WARNING
- Always pay attention to the traffic around you when the cruise control is in
operation . You are always responsible for
c:o ;:g 0 ci: c:o al
On th e road 95
your speed and the distance between
your vehicle and other vehicles.
- For reasons of safety, cruise control
should not be used in the city, in stop
and-go traffic, on twisting roads and
when road conditions are poor (such as
ice, fog, gravel, heavy rain and hydro
plan ing) -you could have an accident.
- Switch the cruise control off temporarily
when dr iv ing in turning lanes, highway
exits or in construction zones.
- Please note that unconsciously "resting"
your foot on the accelerator pedal causes
cru ise contro l not to brake. This is due to
the control system being overridden by
the driver's acceleration.
- Never use the cruise control when driving
off-road or on unpaved roads. The cruise
con tro l is intended for use only when the
vehicle is being operated on paved roads,
and is not suitable for use off-road or on
unpaved roads.
- If a brake system malfunction such as
overheating occurs when the cruise con
trol system is switched on, the braking
function in the system may be switched off. The other cruise control functions re
main active as long as the indicator light
IR;\1)~14 (US model)/ fil (Canadian model)
1s on .
(D Tips
The brake lights illuminate as soon as the
brakes apply automatically .
Changing speed
.. To increase/decrease the speed in incre
ments, tap the lever in the
010 direction
~pa ge 95, fig. 106.
.. To increase/decrease the speed quickly,
hold the lever in the
010 direction until
the desired speed is displayed.
You can also press the accelerator pedal down
to increase your speed, e.g . if you want to
pass someone. The speed you saved earlier

96 On the road
will resume as soon as you let off o f the
accelerator peda l.
I f , however, yo u exceed you r saved speed by
5 mph (10 km/h) for longer than 5 min utes,
the cruise cont ro l will be turned off tempo ra
rily. The green symbol in the display turns
white, the saved speed is retained.
Pre-selecting speed
You con pre-select your desired speed while
the vehicle is not moving .
.,. Turn on the ignition .
... Pull lever into position
(D c> page 95,
fig . 106 .
... Press the lever in the 0 or 0 direction to
increase or decrease your speed .
... Let go of the lever to save that speed.
This function makes it possible, for example, to save the speed yo u want before driving on
the hig hway . Once on the highway, activate
the cruise contro l by pulling the lever towa rd
(D .
Switching off
Temporary deactivation
... Step on the brake pedal, or
... Press the lever into pos ition @ (not clicked
i nto place)
r:::;, page 95, fig. 106, or
... Drive for longer tha n 5 minutes at more
t h an 5 mph (10 km/h) above the s to red
speed.
Switching off completely
... Press leve r into position @(clicked into
pla ce), o r
... Swi tch the ignition off.
The speed yo u saved w ill be re tained if the
cru ise control has bee n sw itched off tempora
r ily. To resume t he saved speed, le t up on the
b rake an d pull the lever to pos ition
(D .
The saved speed will be e rased after turn ing
the ign ition off.
A WARNING
You shou ld only resume the saved speed if
i t is not too high for ex isting traffic cond i
tions. Othe rwise you r isk an acc ident .

(!) Fuel efficient driv ing within the
comb ustion engine's partia l
l oad range
@ System limits fo r electric d riving
i n the EV mode
® Elect ric driving or d riving w it h
the combustion engine (EFFI -
CI ENCY)
© Vehicle d rive ready (READY)
® H igh vo ltage bat tery c ha rge sta -
tus
® Recuperation (CHARGE)
0 Dr iving w it hi n the combus tion
engine's fu ll loa d range
® 100% combust io n engine
® Boost ing -the elect ric e ngine
assists the combus tion engine
( B OOST)
@ Engaging the conventiona l
brakes w ith recuperat ion
@ Vehicle not drive ready ( OFF)
@ EV mode active
The needle rema ins at
OFF when the igni tion
is tur ned on. W hen the veh icle en ters drive
ready mode, t he stat us message
hybrid ready
ap pears briefly in the instrument cluster dis
p lay and the needle in the power meter po ints
to
READY .
Indicator lights and messages
Applies to vehicles: with hybrid drive
The indicator lights in the instrument cluste r
b link or t urn on . Th ey i ndicate fu nctions o r
malfunct ions .
W ith some ind icator lights, messages may ap
pear and a warning tone may sound. Also note
the indicator lights in c::,;,
pag e 27.
Press brake pedal to start vehicle
This message appea rs if you do not press the
brake peda l when starting the vehicle.
Hybrid 99
Shift to N or P to start vehicle
T his mess age appears if the se lector lever for
the automatic t ransmission is not in t he N or
P positions when starting the vehicle.
- Hybrid drive: System fault! Power
brakes, steering malfunction possible
I f the indica tor ligh t turns on and this mes
sage a ppears, t here is a ma lf u nction in the hy
bri d system. The brake booster and the power
steering may stop working. Stop the vehicle i n
a safe l ocat io n as soo n as poss ible.
You may cont in ue dr iving if the indicator light
turns
off afte r start ing the ve hicle severa l
times. Dr ive to an a uthorized repa ir facility
immediately to have the malfunct ion correct
ed .
EHithjj,j Hybrid drive : Sy stem fault!
Contact dealer
If the indicator light turns on and this mes
sage appears , there is a malfunct ion in the hy
br id system . Drive to a n author ized repair fa
c ili ty immediat ely to hav e th e m alfunc tion
corrected.
Ill Hybrid system: Performance
restricted. Please contact dealer
If th e i ndica to r light turns on and this mes
sag e appea rs, there is an engine contro l ma l
f unct io n .
The @B indi cator light in t he instr u
m ent cluster also tur ns on. The engine ou tput
i s re duced. Drive to yo ur autho rize d Au di dea l
er or qualifie d repair facility immediately to
have the malfunct io n corrected .
Hybrid drive deactivated. Please restart
engine manually.
Th is message ap pears if the high vo ltage bat
te ry charge leve l has fallen below a certa in
range or if the ignition key is no longer inside
the ve hicle for ve hicles with the convenience
key *.
Start the eng ine with e it h er the ignitio n key
¢page 83 or with the !STAR T EN GINE STOPI
button* c::> page 86.

-ESC offroad mode and hill descent assist
must not be turned on¢
page 198 .
The combust ion eng ine tu rns on and inter
rupts
the enhanced electric d rive mode when
the vehicle is accelerated. The gray indicator
light
l!I also turns on in the disp lay. The en
hanced electric drive mode resumes automati
cally once acceleration stops.
The enhanced e lectric drive mode is
deactivat
ed if at least one of the following conditions is
met :
- The ign ition is turned
off.
- Th e 1.:1"1 button is pressed again.
- The high voltage battery charge level is low .
- The vehicle speed is higher than approxi -
mately 62 mph (100 km/h).
- The S selector lever position or tiptronic
mode is selected .
- ESC offroad mode or hill descent assist is
switched on .
T he
ld" I button must be pressed to reactivate
it .
Start-Stop function
The combustion engine is operated on ly as
needed. Generally, the combustion engine
turns
off when the vehicle is stationary and
the high voltage battery powers the electrical
vehicle systems.
The purpose of automatica lly shutting the
combustion engine
off in hybrid drive mode is
to save fuel. All of the important veh icle sys
tems, such as steering, brakes and the A/C
system, cont inue to remain active. In some
cases , systems may require the combustion
engine to cont inue running when the vehicle
is stationary. When dr iv ing in congested traf
fic for long per iods of time, the comb ustion
engine w ill cycle on when the vehicle is sta
tionary to keep the high voltage battery
charged.
Gliding
I f the gas pedal is not pressed and the D posi
tion is selec ted, the combustion engine re-
Hybrid 101
mains turned off up to speeds of approxi
mately 99 mph (160 km/h). Driving conserva
tive ly like this can reduce fuel consumption.
Energy recovery (recuperation)
When braking, the electric motor will act as a
generator creating e lectric energy that is then
stored in the high voltage battery. This also
occurs when the ve hicle is coasting or driving
downhi ll. The combustion engine is automati
cally turned
off i n this case.
The vehicle is braked with the electric motor
by applying ear ly and even pressure to the
brakes and using short pedal movements
¢
page 98, fig. 108 @. By doing this, a large
amount of the kinetic energy is recovered and
may be stored as electric energy in the high
voltage battery . During heavy braking, the
convent ional brakes are also act ivated
¢ page 98, fig. 108 @.
The energy recovery is shown in the MMI dis
play ¢
page 104.
Automatic start of the combustion engine
Various operating conditions cause the com
bust ion engine to start automat ically :
- The high voltage battery charge leve l is low.
- The temperature of the combustion engine
is low.
- The temperature of the catalytic converter is
low .
- The power output needed for the A/C sys-
t em is high.
- The vehicle speed is high.
- The vehicle acceleration is high.
- The inclin e is steep.
- High charge level for the high voltage bat-
tery when coasting. In th is case, the h igh
voltage battery cannot absorb any more en
ergy and so the electric motor cannot slow
down the veh icle. The combustion engine
tu rns on (engine brake). In this situation the
h igh voltage battery will show a Max charge.

102 Hybrid
Tips for Driving Efficiently with your Hybrid
Applies to vehicles: with hybrid drive
Driving situa- Conditions Vehicle behavior
tions
- Shift into the D position.
In the D position, the hybrid system adapts
Starting from a -
Release the brake pedal. to the driving situation by automatically
stop -
Only press moderately on the ac- switching between the combustion engine
and electric drive types or by combining
celerator pedal.
them.
- Ca utious dr iv ing and reserved ac-
The kinetic energy of the vehicle is used to
ce leration . move the vehicle.
Constant driv-
ing and coasting -
Release the acce lerator pedal When you release the acce lerator pedal en -
early and entirely. ti rely, the combustion engine turns off au-
(gliding)
tomatically and is disengaged. The vehicle
glides without being propelled.
- Brake early and even ly with short The electric motor brakes the vehicle . By
Energy recovery pedal
movements. doing this, a large amount of the
kinetic
energy is recovered and may be stored in
( recuperation)
the high voltage battery in the form of
electric energy.
- Reserved acceleration and early The kinet ic energy of the vehicle is used to
and even braking w ith short pedal move the vehicle.
movements .
Driving in city -
Use the
la• I button sparing ly. The battery drains quickly when the laVI
button is turned on, which can increase
traffic
fuel consumption because electric driving
is given priority, even if driving with the
combustion engine on would be more effi-
cient .
- Intentionally take your foot off When you release the acce lerator pedal en-
of the gas pedal to allow for ti rely, the combustion engine turns off au-
lengthy coasting . tomatically and is disengaged. The vehicle
glides without being propelled.
Driv ing on high- -
Reduce the vehicle speed by re-Fuel consumption can be reduced by coast-
ways and ex-l
eas ing the accelerator peda l and mg.
pressways not by
braking.
- Avoid vehicle speeds above ajp-
It is possible to coast up to a veh icle speed
proximately 99 mph (160 km/h) . of approximately 99 mph (160 km/h).
- Use the S selector lever position A sporty driving sty le increases fuel con -
and tiptron ic mode sparingly. sumption.

Audi adaptive cruise control and braking guard 107
Audi adaptive cruise
control and braking
guard
Introduction
App lies to vehicles: with Audi adaptive cruise control
The adaptive cruise control system assists the
driver by regu lating vehicle speed and helping
to maintain a set distance to the vehicle
ahead, within the limits of the system . If the
system detects a moving vehicle up ahead,
adaptive cruise control can brake and then ac
celerate your vehicle . Th is he lps to make driv
ing more comfortable on long highway
stretches.
The braking guard system can warn you about
an impending collision and initiate braking
maneuvers
c::;, page 113.
Adaptive cruise control and braking guard
have technical limitations that you must
know, so please read this section carefully, un
derstand how the system works and use them properly at all times.
General information
General information
Applies to vehicles: with Audi adaptive cruise control
Fig. 114 Front of the vehicle: Position of radar sensor
The area that contains the radar sensor
c::;, fig. 114 must never be covered by stickers
or other objects or obstructed with dirt, in
sects, snow or ice that will interfere with the
adaptive cruise control system and braking
guard. For information on cleaning, refer to
c::;, page 219. The same applies for any modifi
cations made in the front area . The
function of the adaptive cruise control
system and braking guard is limited under
some cond itions:
- Objects can only be detected when they are
within sensor range
.:!>page 109 , fig. 117.
-The system has a limited ability to detect
objects that are a short distance ahead, off
to the side of your vehicle or moving into
your lane.
- Some kinds of vehicles are hard to detect;
for examp le motorcycles, vehicles with high
ground clearance or overhanging loads may
be detected when it is too late or they may
not be detected at all.
- When driving through curves
c::;, page 108.
-Stationary objects c::;, page 108.
A WARNING
-Always pay attention to traffic when adap-
tive cruise control is switched on and brak ing guard is active. As the dr iver, you are
still respons ible for start ing and for main
tain ing speed and distance to other ob
jects. Braking guard is used to assist you .
The driver must always take action to avoid
a collision. The driver is always responsible
for braking at the correct time.
- Improper use of adaptive cruise con trol
can cause collisions, other accidents and
serious personal injury .
- Never let the comfort and convenience
that adaptive cruise control and braking
guard offer d istract you from the need to
be alert to traffic conditions and the
need to remain in fullcontrolofyourve
hicle at all times,
- Always remember that the adaptive
cru ise contro l and braking guard have
limits -they will not slow the vehicle
down or maintain the set distance when
you drive towards an obstacle or some
thing on or near the road that is not
moving, such as vehicles stopped in a
traffic jam, a stalled or disabled vehicle.
If registered by the radar sensor, vehicles
or obstacles that are not moving can
trigger a collision warning and if .,.

108 Audi adaptive cruise control and braking guard
confirmed by the video camera, an acute
collision warning.
- For safety reasons, do not use adaptive
cruise control when driving on roads with
many curves, when the road surface is in
poor condition and/or in bad weather
(such as ice, fog, gravel, heavy rain and
hydroplan ing). Using the system under
these conditions could result in a colli
sion.
- Switch adaptive cruise control off tempo
rar ily when driv ing in turning lanes, on
expressway exits or in construc tion
zones. This prevents the vehicle from ac
celerating to the set speed when in these
situations.
- Th e adaptive cruise control system w ill
not brake by itse lf if you put your foot on
the accelerator pedal. Doing so can over
ride the speed and distance regulation.
- When approaching stationary objects
such as stopped traffic, adaptive cruise
control will not respond and braking
guard w ill have limited function.
- The adaptive cr uise control system and
braking guard do not react to people, an
ima ls, objects crossing the road or on
coming objects .
- The function of the radar sensor can be
affected by reflective objects such as
guard rails, the entrance to a tunnel,
heavy rain or ice.
- Never follow a vehicle so closely that you cannot stop your vehicle safely. The
adaptive cruise control cannot slow or
brake the vehicle safely when you follow
ano ther vehicle too closely . Always re
member that the automatic braking
function cannot bring the vehicle to a sudden or emergency stop under these
conditions.
- To prevent unintended operation, always
switch adaptive cruise control off when it
is not being used.
QJ Note
The sensor can be disp laced by impacts o r
damage to the bumper, whee l housing and underbody.
That could affect the adaptive
cruise control system and braking guard. Have yo ur authorized Aud i dea ler or a u
thorized Audi Service Facility check their
function.
In curves
Applies to vehicles: with Audi adaptive cruise contro l
Fig. 115 Examp le: driv ing into a curve
When driving into a curve ¢fig . 115 and out
of a curve, the adaptive cruise control may re
act to a vehicle in the next lane and app ly the
brakes. You can override or prevent the brak
ing by pressing the accelerator pedal briefly.
' Stationary objects
Applies to vehicles: with Aud i adapt ive cru ise contro l
Fig. 116 Example: object changing lanes and station
a ry object
T he adaptive cru ise control system only reacts
to objects that are moving or that the system
has a lready detected as moving. For examp le,
if a vehi cle@ , which has al ready been detect
ed by the adaptive cruise control, turns or
changes lanes and another stationary vehicle
® is located in front of that vehicle, the sys
tem will not react to the stat ionary veh icle.